import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import User from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  {
    path: '/home',
    component: Home,
    redirect: '/welcome',
    children: [{ path: '/welcome', component: Welcome }, { path: '/users', component: User },
      { path: '/rights', component: Rights }, { path: '/roles', component: Roles }]
  }

]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪里路径跳转而来
  // next 是一个函数，表示放行 next() 放行 next('/home')强制放行
  // eslint-disable-next-line no-undef
  if (to.path === '/login') return next()
  const tokenStr = window.sessionStorage.getItem('token')
  console.log('导航守卫验证成功跳转' + tokenStr)
  // eslint-disable-next-line no-undef
  if (!tokenStr) return next('/login')
  // eslint-disable-next-line no-undef
  console.log('导航守卫验证成功跳转' + to)
  next()
})
// router 升级导致问题 需要捕获错误
const originalPush = VueRouter.prototype.push
VueRouter.prototype.push = function push (location, onResolve, onReject) {
  if (onResolve || onReject) return originalPush.call(this, location, onResolve, onReject)
  return originalPush.call(this, location).catch(err => err)
}

export default router
